Grate bar



A. E. BINDER Juy 16, 1935.

GRATE BAR Eled oct. 27, 1955 Patented July 16;y 1935 t v i f UNITED S'Iitflil'."Sl Y,Piei'lfillNT OFFICE- .i 2,008,660 i s GRATEeBAR Adolph Efi'iiaor, Spokane, Wash. Application ootober 27, iastseioi o.- 695,497. s Claims.. remesa-16s);

, `My, invention relates to grate bars and certain tudinal expansion and contraction ofthe grato :,fz; objects of the invention are to provide a grate `bar frame between the flange 9 andthe slanting head ccmprsinsjnovel heed supports. a novel grate Il as clearly shown at ltin'r'ig. 3 of theoraw'- bar frame supported by the head supports in ing, t y H ,Y Y i 5 such manner as to allow for vexpansion and con- The `top' edges 'of ,the gratel bar frame Vsides lI'i 5 traction, a `plurality of gratebar .sectionslsup- 'are formed in saw-tooth'ashion to provide angu-v Ported 'in' a novel angular manner by the grate lar depressions I1 and angular projections c |18. bar frame ortne purpose of minimizing warpage YSaid angular depressions and projections are not of theb'ars, and to provide reenforcements and transversely opposite eachother but arerespe'T l means for maximum circulation of air through titely'o'ffset -from each otherA` as clearlyshown 10 the frame and under the grate bar sections. Furin Figs, 1 and 4, In other words, lines from the ther objects are to provide a grate bar that iS same points of the depressions and projections on durable and which may be readily assembled and one Sido extending to' corresponding points of taken apart. said depressions and projections on the other side i5 With the above and other objects in VieW Wiiieh are not normal to the sides and slant with re- 15 Will appear aS the deSCrilotiOn proceedsy the inspect to the right angular ends I3 of the grate vention consists of the novel construction, adapbar frame, This is one important feature of the tation, Combination and arrangement 0f Parts invention. The points of the angular projections hereinafter described and claimed. These obi3 are out oi to form short fiat portions le for 2J jects are accomplished by deViCeS illustrated in' reasons hereinafter set forth. The bottom edges 20 the aoeornpanying drawing; Wherein of the sides l2 of the gratev bar frame may be Figure 1 iS a VieW in perspective 0f the grate convex or curved downwardly although this is a bar as a whole; Fig. 2 is adetail View in permatteiof ohoioo l SpeCtiVe of a head Support OI' the grate bei' The grate bar sections, an end one of which is frame; Fig. 3 iS a fragmentary View in Side eie' shown in Fig. 5 and an intermediate one shown 25 vation showing an end of the grate bar frame in in Fig 3, are castings Comprising sides 20 and Section and resting 0n e heed Support? Figt iS bars 2| which diagonal bars projecty outwardly a View in side elevation of the grate bar frame beyond the sides and are disposed at the same with grate bar Sections Seated thereon; Fig. 5, slant with respect to said sides as are the dei is a detail view in inverted perspective showing pressions H and projections I8 respectively on 30 an end grate bai Section; and Fig 5 iS a COII'eopposite'sides of the frame sides l2, as hereinspending View snowing an intermediate grate before set forth in detail. The sides 2n of the bar section. Vgrate bar sections are disposed the same distance Referring to the drawing throughout Whieii apart as are the sides l2 of the grate bar frame,

like reference numerals indicate like parts, the 'and said sides 20 are extended down to form 35 I numeral Ei designates anangle iron sill which is depending truncated v shaped projections 22 ordinarily nxed around the fire brick sides of a Whose points are out off as Shown at 23 to provide urnaee fire bOX- The numeral' 6 designates a short flat ends. The central diagonal bar of head Support, it being underStOOd One 0f Said each section extends all the way down to the 40 supports is used eteech end of the device Said bottoms or the projections 22 of the sides 2o thus 40 head support iS bifurcated to form a pair of 011tforming partitions 24. on eeen side and interwardly projecting legs l which rest cn the sill mediate of the central and end bars 2l of each 5 and are grooVed Or'Cut aWaY 0n their undersection another diagonal bar is extended down sides, aS at 3, for the entrir of air. A depending below the sides to form depending fins 25.

flange 9 is formed on the inner end of said head f The depending truncated V-shaped projections 45 support andaround top shoulder 'i0 projects'from 22 of the grate bar sections terminate short of the upper portion of Said flange and terminates the ends of the sides 20 thus leaving flat surface in a slanting head ll. portions 26 at the ends lof the grate sections.

The grate bar frame Ais a casting comprising The sides 20 of the sections, being the same `dissides l2 and ends i3, and the sides are prefertance apart as are the sides l2 of the frame, the

ably strengthened by transverse integral partidepending truncated V-shaped projections 22 of tions lll. The ends are provided with semi-anthe sections fit into the V-shaped depressions I'l nular recesses l5 cut in from their bottom edges. of the frame sides I2. Said projections, being These recesses t onto the shoulders I0 of the more obtuse than saiddepressions, the flat end head supports il leaving sufcient space for longiportions 26 of the sections rest on the` flat surfaces 55 I9 of the frame projections I8. This arrangement leaves spaces 21 between said depressions and projections for the entry of air, and the upper edges of the frame sides are beveled to facilitate the entry of air through these spaces. An end bar 2| of the end grate sections is cut away at 28 to also permit the entry of air as shown in Fig. 5. Said end bar may merge into the next bar 2|, as shownat 29, for the purpose of making a rectangular end on the outside of the end grate sections so that they will t snugly against the end flange 9 of the head support 6 as shown in Fig. 1.

It will now be apparent that I have provideda grate bar that is durable, which may be readily assembled and taken apart, which allows for ample circulation of air, and which -is amplyreenforced against warping. I-Iaving thus described my invention, it being understood that minor changes may be resorted to in its construc- `tion Without departing from the scope and' spirit of the invention, what I claim and'desire to 'secure by Letters Patent of the UnitedStates 1. A grate bar comprising head supports,` a grate bar frame supported by the head supports, the upper edges of the frame having V-shaped depressions therein, a plurality of grate bar sections supported by the frame, said sections having depending V-shaped projections that fit into the depressions of the frame, and said projections being more obtuse than the depressions whereby spaces are left between the projections and depressions.

2. A grate bar section comprising sides with depending V-shaped projections, a plurality of parallel bars disposed in diagonal relation with respect to the sides, the central bar extended to the bottom of the depending V-shaped projections to form a partition, and a bar on each side of the partition extended below the depending V-shaped projections to form depending fins.

3. A grate bar comprising head supports, a grate bar frame supported by the head supports and consisting of rectangular sides and ends, the top edges of the sides having V-shaped depressions with short lat portions therebetween, the opposing depressions of the respective sides being oiiset from each other longitudinally of the frame, and a plurality of grate bar sections comprising diagonal bars and depending sides having truncated V-'shaped projections adapted to be mounted on said frame with said depending sides tting in said depressions and leaving air cireulating spaces between the bottom of said depressions and the truncated ends of said depending sides.

ADOLPH E. BINDER. 

